1. About home page: I have just fixed for you, please check again.
2. Edit footer buider: Please go to Template -> Theme buider -> FooterBuider9 and edit with Elementor: https://prnt.sc/vfurm1
Please go to edit page with Elementor and select Category for product, or if you want to show all product category, select category and remove it. Save again. https://prnt.sc/vgk5e6